MAX13485E Datasheet, PDF (9/16 Pages) Maxim Integrated Products – Half-Duplex RS-485/RS-422 Transceivers in uDFN

Half-Duplex RS-485/RS-422 Transceivers in µDFN
V_CC
DE
0
A, B
V_OL
A, B
0
Figure 4. Driver Enable and Disable Times
Test Circuits and Waveforms (continued)
1.5V
1.5V
t_DZL(SHDN),t_DZL
t_DLZ
2.3V
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
2.3V
t_DZH(SHDN),t_DZH
t_DHZ
V_OL + 0.5V
V_OH + 0.5V
OUTPUT
UNDER TEST
500Ω
C_L
V_CC
S1
S2
Figure 5. Driver-Enable and -Disable-Timing Test Load
B
ATE
V_ID
R
RECEIVER
OUTPUT
A
Figure 6. Receiver Propagation Delay Test Circuit
A
B
V_OH
RO
V_OL
f = 1MHz, t_LH ≤ 3ns, t_HL ≤ 3ns
1V
-1V
t_RPHL
t_RPLH
1.5V
1.5V
t_RSKEW = |t_RPHL - t_RPLH|
Figure 7. Receiver Propagation Delays
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